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目的了解新乡市农村集中式供水枯水期与丰水期水质理化指标及其影响因素,为改善和提高农村饮用水质量提供依据。方法在新乡市11个县(区)设立监测点,共采集水样1 422份,其中枯水期636份和丰水期786份。所有水样按国家标准进行采集、检验和评价。结果枯水期的合格率为64.1%。丰水期的合格率为81.1%。丰水期合格率比枯水期明显上升,差异有统计学意义(P<0.001)。主要不合格项目有氟化物、铁和硫酸盐等。结论丰水期相比枯水期水中氟化物和铁等元素含量降低,各项指标得到改善。但仍需完善净化工艺,解决农村居民饮用水安全隐患。
Objective To understand the physical and chemical indexes of water quality during the dry and wet periods of rural centralized water supply in Xinxiang City and provide the basis for improving and improving the drinking water quality in rural areas. Methods A total of 1 422 water samples were collected from 11 counties (districts) in Xinxiang City, including 636 in dry season and 786 in wet season. All water samples collected according to national standards, inspection and evaluation. The result was 64.1% in the dry season. The wet season’s pass rate was 81.1%. The pass rate in wet season was significantly higher than that in dry season, the difference was statistically significant (P <0.001). The main unqualified items are fluoride, iron and sulfate. Conclusion Compared with dry season, the content of fluoride, iron and other elements in wet season decreased, and all the indexes were improved. But still need to improve the purification process to solve the safety hazards of drinking water for rural residents.